S
M
T
W
T
F
S
30
101°
81°
31
100°
83°
1
100°
82°
2
101°
81°
3
92°
79°
4
99°
78°
5
100°
81°
6
100°
79°
7
101°
82°
8
101°
84°
9
101°
83°
10
100°
79°
11
100°
81°
12
102°
77°
13
101°
81°
14
100°
80°
15
100°
81°
16
99°
82°
17
100°
83°
18
98°
81°
19
97°
77°
20
98°
80°
21
98°
77°
22
98°
76°
23
99°
78°
24
95°
77°
25
92°
71°
26
94°
72°
27
95°
76°
28
94°
78°
29
95°
77°
30
90°
79°
1
81°
70°
2
81°
70°
3
75°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Dallas
Dallas's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Dallas. See also: October | November | December.
